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Oracle® Database Recovery Manager Reference
10g Release 1 (10.1)

Part Number B10770-01
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Text description of report


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Text description of reportObject


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Text description of atClause


To perform detailed analyses of the RMAN repository. The Database writes the output from the REPORT command to standard output or the message log file.

Use the REPORT command to answer questions such as the following:

Restrictions and Usage Notes

Keywords and Parameters

Syntax Element Description


Lists all datafiles in need of a new backup. The report assumes that you will use the most recent backup for restore operations. If you do not specify any option, then RMAN uses the current retention policy configuration. If the retention policy is disabled (CONFIGURE RETENTION POLICY TO NONE), RMAN generates an error.

DAYS = integer

Specifies a threshold number of days worth of logs needed to recover the file. For example, REPORT NEED BACKUP DAYS 7 DATABASE shows the datafiles whose recovery requires more than one week's worth of archived redo logs.

If the target database control file is mounted and current, then RMAN makes the following optimizations to this report:

  • Files that are offline and whose most recent backup contains all changes to the file are not included.
  • Files that were offline and are now online, and whose most recent backup contains all changes up to the offline time, are only reported if they have been online for more than the specified number of days.


Specifies a threshold number of incremental backups required for recovery. If complete recovery of a datafile requires more than integer incremental backups, then the datafile requires a new full backup.

Note: Files for which no backups exist will not appear in this list: issue the REPORT NEED BACKUP REDUNDANCY command to display them.


Specifies a time window in which RMAN should be able to recover the database. The window stretches from the current time (SYSDATE) to the point of recoverability, which is the earliest date to which you want to recover. The point of recoverability is integer days in the past, that is, SYSDATE - integer.

REDUNDANCY = integer

Specifies the minimum number of backups or copies that must exist for a datafile to be considered not in need of a backup. In other words, a datafile needs a backup if there are fewer than integer backups or copies of this file. For example, REDUNDANCY 2 means that if there are fewer than two copies or backups of a datafile, then it needs a new backup.

OBSOLETE obsOperandList

Lists full backups, datafile copies, and archived logs recorded in the RMAN repository that can be deleted because they are no longer needed. The subclause obsOperandList describes the criteria that RMAN uses to determine what is obsolete. If you do not specify parameters in obsOperandList, then RMAN uses the options specified in CONFIGURE RETENTION POLICY. If you use this option in conjunction with DEVICE TYPE, then RMAN only considers backups and copies created on the specified device.


Lists the names of all datafiles and tablespaces at the specified point in time.


Lists all unrecoverable datafiles. A datafile is considered unrecoverable if an unrecoverable operation has been performed against an object residing in the datafile since the last backup of the datafile.

Note: The nonexistence of any backup of a datafile is not sufficient reason to consider it unrecoverable. Such datafiles can be recovered through the use of the CREATE DATAFILE command, if redo logs starting from when the file was created still exist.

DEVICE TYPE deviceSpecifier

Specifies the type of storage device. RMAN only considers backups and copies available on the specified device for its report.

Syntax Element Description


Specifies the datafiles to be included in the report. The report can include the entire database (optionally skipping certain tablespaces), a list of tablespaces, or a list of datafiles.

Note: RMAN includes objects from prior incarnations.

DATAFILE datafileSpec

Lists the specified datafiles. RMAN reports on backups or datafile copies that contain at least one of the specified datafiles.

TABLESPACE 'tablespace_name'

Lists datafiles in the specified tablespace. RMAN reports on backups or datafile copies that include at least one datafile from a specified tablespace.


Lists backups or datafile copies of all files in the current database. Specify SKIP TABLESPACE tablespace_name to exclude the specified tablespace from the DATABASE specification.

Syntax Element Description


Specifies a point in time as a time, an SCN, or a log sequence number.

AT TIME = 'date_string'

Specifies a date. The NLS_LANG and NLS_DATE_FORMAT environment variables specify the format for the time.

AT SCN = integer

Specifies an SCN.

AT SEQUENCE = integer THREAD = integer

Specifies a log sequence number for a specified redo THREAD number. The integer indicates the time when the specified log and thread were first opened.

Report Output

The information that appears in the output is described in the following tables:


Reporting Database Schema: Example

This example, which requires a recovery catalog, reports the names of all datafiles and tablespaces one week ago:


Report of database schema
File K-bytes    Tablespace           RB segs Datafile Name
---- ---------- -------------------- ------- -------------------
1        307200 SYSTEM               ***     /oracle/oradata/trgt/system01.dbf
2         20480 UNDOTBS              ***     /oracle/oradata/trgt/undotbs01.dbf
3         10240 CWMLITE              ***     /oracle/oradata/trgt/cwmlite01.dbf
4         10240 DRSYS                ***     /oracle/oradata/trgt/drsys01.dbf
5         10240 EXAMPLE              ***     /oracle/oradata/trgt/example01.dbf
6         10240 INDX                 ***     /oracle/oradata/trgt/indx01.dbf
7         10240 TOOLS                ***     /oracle/oradata/trgt/tools01.dbf
8         10240 USERS                ***     /oracle/oradata/trgt/users01.dbf
Reporting Datafiles Needing Incremental Backups: Example

This example reports all datafiles in the database that require the application of five or more incremental backups to be recovered to their current state:


Report of files that need more than 5 incrementals during recovery
File Incrementals Name
---- ------------ ----------------------------------------------
2    9            /oracle/oradata/trgt/undotbs01.dbf
3    9            /oracle/oradata/trgt/cwmlite01.dbf
4    9            /oracle/oradata/trgt/drsys01.dbf
Reporting Datafiles Needing Backups: Example

The following example reports all datafiles from tablespace SYSTEM that will need more than two days of archived redo logs to be applied during recovery after being restored from the most recent backup:


Report of files whose recovery needs more than 2 days of archived logs
File Days  Name
---- ----- -----------------------------------------------------
1    3     /oracle/oradata/trgt/drsys01.dbf.f
Reporting Unrecoverable Datafiles: Example

The following example reports all datafiles that cannot be recovered from existing backups because redo may be missing:


Report of files that need backup due to unrecoverable operations
File Type of Backup Required Name
---- ----------------------- -----------------------------------
1    full                    /oracle/oradata/trgt/system01.dbf
Reporting Obsolete Backups and Copies: Example

The following example reports obsolete backups and copies with a redundancy of 1:


Report of obsolete backups and copies
Type                 Key    Completion Time    Filename/Handle
-------------------- ------ ------------------ --------------------
Backup Set           1      OCT 30 2001 15:54:56
  Backup Piece       1      OCT 30 2001 15:54:56 /oracle/dbs/01d7t0t9_1_1
Archive Log          1      OCT 30 2001 04:52:17 /oracle/oradata/trgt/arch/archive1_21.dbf